[ZeKK14]

There is no frame around the window. The electrical door handle opens up a bit the window before unlocking the door to free it from the seal.

Without power the manual handle needs to do that also, which is more complicated that a "normal" door handle.

[csydas]

I have very little understanding on the power requirements for a window, but couldn't Tesla have just reserved some battery off the main battery as an emergency fallback? Just enough power to lower the windows to a safe route, maybe illuminate some LEDs on the emergency latches or paths to the emergency latches? I'm not really interested in discussing Tesla's intended design, but more from just a mechanical/electrical standpoint if it would be expensive (power wise) to have a reserve like this.

Edit: Also, I guess weight also of such a battery, but I suppose maybe the weight can be understood by how much reserve it would need.

[Zetobal]

It's not really complicated... it would be more expensive though.